20 years ago, a famous actress shot herself in the dressing room of studio No.7. Her sudden actions were puzzling to everyone, and many strange things happened since then. There were shooting equipment that malfunctioned for no reason, the tea cup that the actress used while she was alive was found filled with hot water in the empty dressing room, weird sounds coming out of the dressing room in the middle of the night. All these occurences caused the dressing room to be sealed off in the end......

20 years later, a famous director re-launch the studio No.7 for filming a horrow TV series. In the midnight before the day shooting begins, you suddenly remembered that there was a prop that had not been prepared. You returned to studio No.7, and a series of unexpected events gradually unfolded......